The former New York Mayor — who is poised to run for President as a Democrat in 2020 — spoke at the premiere of his movie, “Paris to Pittsburgh,” which shows how Americans are “demanding and developing real solutions in the face of climate change.”

Bloomberg, 76, told the crowd at the event hosted by Bloomberg Philanthropies in association with the Cinema Society Monday, including “Law & Order: SVU” star Mariska Hargitay, her husband Peter Hermann and actor Edward Norton: “American people are leading where Washington won’t to help spread solutions from town to town and state to state.”

“We hope this documentary will show that and give people hope.”

The title is a play on President Donald Trump’s explanation as to why the U.S. is pulling out of the Paris Agreement.

“I was elected to represent the people of Pittsburgh, not Paris,” Trump said in January 2017.

And Bloomberg added: “When President Trump announced his intention to pull the U.S. out of the Paris climate agreement, he said he wanted to help the people from Pittsburgh, not Paris.”

“At that point, Pittsburgh mayor, my friend Bill Peduto, quickly corrected him. Pittsburgh is a leader on climate change, so Bill stood up and said, ‘Actually, Pittsburgh is fully committed to the goals of the Paris Accord,’ and we did not hear another Trump tweet!”

He added: “I’m glad to say seriously that hundreds of mayors and business leaders have made the same pledge … we hope this documentary will lead even more communities to join us.”

Bloomberg is due to attend two more premieres for “Paris to Pittsburgh” in Iowa and London ahead of its screening on the National Geographic channel on Dec. 12.

His decision to have one of the premieres in Iowa, a key early presidential voting state, will further spread the theory he will put himself down as a potential candidate.

Last month, the billionaire also spent an estimated $5 million to appear in a “Vote Democratic” national TV ad campaign in an apparent move to raise his profile outside of New York, where he was elected mayor three times.

He told the AP last week he would make his decision to run by February. And a source told Page Six: “This is the most ready Michael could ever be. Now has to be the time to go for it. He has the skills and the passion.”